Air inspirator for engines



Nov. 13 1923.

w. W. HALLINAN AIR INSPIRA'IOR FOR ENGINES Filed Dec. l5 1922 WAN,

Patented Nerv. 13, 1923,

. UNET TATS WILLIAM VJAYNE HALLINAN, OF PUEBLG, COLORADO.

.AIR INSPIRATOR FOR ENGNES.

Application :tiled December 13, 1922.

To all whom 'it may concern:

Be it known that l, WILLIAM W. HALLi- INAN, a citizen of the United States, residing at Pueblo, in the county of Pueblo and State of Colorado, have invented certain new and useful Improvements in an Air lnspirator for Engines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to an air inspirator for internal combustion engines, and aims to provide a novel and improved device for admitting an auxiliary supply of `air to the carbureted air flowing from the carbureter to the intake manifold of the engine, in order to dilute the mixture and obtain more efficient combustion of the fuel, especially when the throttle valve is opened to enrich the mixture.

Another object is to combine the air entry means with the throttle valve, whereby the admission of air to the mixture flowing from the carbureter to the engine is controlled according to the position of the throttle valve, to proportion the auxiliary supply of air according to the position of such valve.

A further object is the provision of a throttle valve construction having novel means for the passage of a restricted stream of carbureted air, when the throttle valve is closed, for the idling operation of the engine.

A still further object is the provision of such a device incorporating the throttle valve, by-pass arrangement and auxiliary air inlet means into a unit which can be readily disposed or sandwiched between the carbureter and intake manifold of an engine.

It is also an object of the invention to provide such a device which is simple and inexpensive in construction, as well-as being practical and eiiicient in use.

W ith the foregoing and other objects in view, which will be apparent as the description proceeds, the invention resides in the construction and arrangement of parts, as hereinafter described and claimed, it being understood that changes can be made within the scope of what is claimed, without departing from the spirit of the invention.

TheV invention is illustrated m the accompanying drawing, wherein-- Figure l is a side elevation of the 1mproved device.

which is Serial No. 606,709.

Fig. 2 is a section on the line 2-2 of Fig.

l, showing the device in plan.

Fig. 3 is a section on the line 3 3 of F ig. l.

The improved device, which is constructed as a single unit, is disposed between the carbureter and intake of the engine Acylinders, the numeral 7 designating the outlet portion of the carbureter and the numeral S the trunk or inlet portion of the intake manifold, said carbureter and manifold having the flanges 9 and 10, respective, which are usually clamped or fastened together. However, in using the present device, it is readily interposed between the carbureter andrmanifold by placing it between the flanges 9 and 10 when said carbureter and manifold are separated.

The device comprises a block or body 1l which is sandwiched or disposed between the flanges 9 and l0, and said flanges and body are clamped together by bolts l2. The body has an opening 13 of the same diameter as the openings or bores of the adjacent ends or portions ofthe carbureter and manifold, and between the extremities of the opening or passage 13, the body 11 is formed withinsaid opening with a crescentshaped flange or ledge 14C forming a secondary opening l5 smaller in diameter than the main opening 18 and eccentric relatively to said opening 13, with the openings 13 and l5 tangent at a point opposite to the intermediate portionl of the flange 14n. The flange 11i provides the oppositely-facing upper and lower shoulders 16.

rlhe throttle valve 18 is disposed in the opening 15, and is secured on a rock shaft 17 journaled through the body or member 11 and the flange 141 intermediate the ends of the flange, an arm 19 being secured to one protruding end of said shaft for turning the shaft to open and close the throttle valve. The throttle valve 18, when closed, lits snugly within the flange let, to close the opening 15, and the throttle valve 18 is used in lieu of the usual throttle valve in the outlet portion of the carbureter, or such throttle valve of the carbureter is fastened wide open. In other words, instead of using the customary throttle valve, the throttle valve of the present device is substituted, being located higher up.

In order to permit a restricted amount of carbureted air to pass the throttle valve when said valve is completely closed, So that the engine can continue to operate idly, the

flange "lllis provided at its intermediate or Wider portion with the by-pass ports 2O and 21 extending therethrough from one shoulder 16 to the other, said ports being located at opposite sides of the shaft 17. The port 20 permits a stream of carbureted air to flow therethrough, While the tlo'vv through the port 21 can be regulated, in order to adjust the amount of carbureted air that is allowed to pass the throttle valve with said valve in closed position. Thus, a screw valve 22 is threaded into the body 11 to project intothe port 21, for closing said port more or less, to restrict or shut off the flow et air through the port 21. However, the port 2O Will remain open at all times, even though the valve 22 is completely closed, so as to assure of su'tlicient carbureted air'flowing past the throttle valve to lreep the engine idling.

The body 11 has a flat lace or abutment 23 at one side, from which air entry ports 2-1 and 25 extend to the opening 13 above the flange 111, whereby air can 'l'low Yfrom the atmosphere thro ugh said ports, when opened, to mix with the carbureted air 'flowing past the throttle valve.

The inlet or air through the ports 24C and 25 is controlled by a shutter 26, which comprises a fiat plate of metal bearing snugly against the tace ot' the abutment 28, said shutter being engaged on a squared or noncircular portion 27 o' he shaft 17 to turn said shutter With the throttle valve. A coiledV spring 28 surrounds the shaft 17 and is conlined between the shutter 26 and a nut 29 screw-threaded on the protruding stem et the shaft 17, whereby to press the shutter 26 under tension again st the abutment 23, thereby'not only keeping the shutter tightly in.'

place but also providing a friction means Yl'or holding the shutter and throttle valve in YaA y position to which they are turned. Then the shutter 26 is in its initial position, with the throttle valve closed, the shutter erf;- tends across and closes the outer ends of the ports 241; and 25. The shutter has an eccentric curved ede'e 30 extending from the port 25 counterclocirivise nearer to the axis ci, the shaft 17 and shutter, whereby When the shutter is turned in opening the throttle valve, the port 25 will be gradually uncovered as the edge 30 moves across said port, thereby gradually' accelerating the amount o'll air which can pass through the port The shutter 26 has an odset or cut-away portion 31 immediately adjacent to the port 2a, in order that the port 241 will be uncovered or opened as soon as the throttle valve is opened slightly, thereby immediately permitting the air to -low through the port 2d, and as the throttle valve is opened further, the port 24?: is gradually opened.

The speed of the engine is controlled, as usual, by the opening Vand closingof the throttle valve, and when the throttle valve is completely closed, for the idling operation of the engine, suiiicient carbnreted air can lov.' through the by-pass ports 2O and 21 with the engine running. During such idling or' the engine, Vthe air entry ports 24 and 25 are both closed, but the moment the throttle valve. is opened slightly the port 21 is uncovered or opened, thereby admitting an auxiliary stream of air which mixes With the carbureted air flowing past the throttle valve. rlhe further the throttle valve is opened to move the edge 30 across the port 25, the more air is.permitted to ioiv through the port 25, thereby accelerating or increas ing the admission of air. The primary port 24 is opened immediately when the throttle valve is opened slightly, While the secondary air inlet port 25 is opened gradually after the port 211 has been opened during the :turther opening of the throttle valve. A

The present device induces more air into the carbureted mixture, in order to improve the combustion of the fuel, With a saving in 'fuel and an increased eiliciency of the engine, as well as greater mileage for the Afuel consumed. rflic formation or accumulation of carbon in the engine cylinders is also reduced. The throttle valve being located higher up will give the globules oi' fuel an opportunity to drop back before passing the throttle valve, so as to return to the carinii-eter. The flange 14 also provides a baille or obstruction which will arrest the upward creeping of the fuel along the Wall ol" the intake conduit vvith the 'fion' ot air, so that the passage ot unvaporized incl to the engine cylinders will be eliminated, thereby avoiding dilution et' the crank case oil as' Well as preventing the formation ot ca rbon by the over supplyof l'uel to the combustion chambers. The additional 'supply of air Will render the mixture thoroughly con'lbustible, and the adin'ssion et air through the ports 2a and 25 Will also serve to reatomize the heavier and condensed portions of the fuel lovving along the sides or Wall ot the intake conduit, it being noted that the ports 2a and 25 are tangent, or substantially tangent, to the opening 13 above the flange or baille 16, whereby the infloiving' streams of air vvill ivhirl or agitate the mixture above the Wings of the butterfly throttle valve 18. 1

Although the present device is shown as a separate unit, to be disposed between the carbureter and intake manifold, it can be builtin or incorporated as a part of the carburetcr, in which case the body or member 11 would he a part of the carbureter construction. y ,Y Y Having thus described Athe invention, what is claimed as new is 1. A device of the character described comprising a body having ari-opening 'for l (il) the new of carbureted air to an engine, and having a flange Within said opening, nd a throttle valve mounted in said opening to iit said flange when the valve is closed, said flange having a ley-pass port therethrough.

2. A device ol' the character described comprising a body having an opening for the flow oi' carbureted air to an engine, and having a iiange Within said opening, a throttle valve mounted in said opening to lit said flange when the valve is closed, said iiange having a plurality of by-pass ports therethrough, and means tor controlling the flow through one of said ports.

3. A device of the character described comprising a body having an opening therein for the iioiv of carbureted air to an engine, and having a crescent-shaped flange in said opening providing'a smaller secondary opening, and a throttle valve mounted in said secondary opening, said flange having a by-pass for the air.

4l. A device of the character described comprising a body having an opening for the floiv of carbureted air to an engine, a shaft extending through said body, a throttle valve carried by the shaft in said opening, the body having an air entry port leading to said opening, a shutter to extend across said port bearing against the exterior of said body and rotatable With said shaft, and spring means on said shaft pressing said shutter against the body, the shutter being cut aivay so as to uncover the port When the shutter is turned in opening said valve.

5. A device of the character described comprising a body having an opening for the iioiv ot carbureted air to an engine and having primary and secondary air entry ports leading to said opening, and a shutter for said ports having' a portion for'completely opening the primary port by a slight movement Vof the shutter and having an eccentric portion to gradually open the secondary port when the shutter is moved turther.

6. A device of the character described comprising a body having an opening for the passage ot carbureted air to an engine, a throttle valve mounted in said opening, said body haviig primary and secondar,7 air entry ports leading to said opening, and a shutter :tor said ports movable With the throttle valve and having a portion to completely open the primary port When the throttle valve is opened slightly, the shutter having an eccentric portion lfor opening the secondary port gradually as the throttle valve is opened further.

7. A. device oit the character described comprising a body having an opening for the passage of carbureted air to an engine, a baille in said opening, and an air entry port leading to said opening adjacent to said battle, said baille providing an obstruction to the flow of iiuid along the Wall of said opening'.

8. A device of the character described comprising a body having an opening for the passage of carbureted air to an engine, a throttle valve mounted in said opening, said body having a baille in said opening to tit said valve When the valve is closed, and the body having an air entry port extending to said opening adjacent to said baffle, said baille providing' an obstruction to the flow or' fluid along the Wall ot' said opening.

9. A device of the character described comprising a body having an opening for the passage of carbureted air to an engine, and a throttle valve mounted in said opening, said body having a baille in said open` ing to lit the valve when the valve is closed, and the body having an air entry port leading to and arranged substantially tangentially Withsaid opening adjacent to said baille, said baille pro-viding an obstruction to the tloiv oit Huid along the Wall or" said opening.

In testimony whereof I have signed my naine to this specilication in the presence of two subscribing Witnesses.

LLIAM VAYNE HALLINAN.

Witnesses MEARL O. REPLOGLE, WALTER B. CANN. 

